Influence of Ventilation Ratio on Desiccant Air Conditioning System's Efficiency Performance
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- TRAN Thien Nha
- Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology
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- AKISAWA Atsushi
- Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology
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- KASHIWAGI Takao
- Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology
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- HAMAMOTO Yoshinori
- Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology
Bibliographic Information
- Other Title
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- デシカント空調システムの性能に及ぼす外気導入率の影響
- デシカント クウチョウ システム ノ セイノウ ニ オヨボス ガイキ ドウニュウリツ ノ エイキョウ
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Abstract
Ventilation air is a concern for engineers since ventilated air controls indoor air contamination; additional ventilation, however, increases the energy consumption of buildings. The study investigates the energy efficiency performance of the desiccant dehumidification air conditioning system in the context of ventilation for a hot-humid climate such as summer in Japan. The investigation focuses on the variable ratio of ventilation air as required by the application of air conditioning system. The COP of the desiccant air conditioning system is determined. The evaluation is subsequently performed by comparing the desiccant based system with the conventional absorption cooling system and the vapor compression cooling system. <br>Based on 12 desiccant rotor simulations, it is found that the desiccant regeneration temperature required varies between 47°C to 85°C as ventilation ratio increases from 0. 0 to 100%, and up to 52. 5°C as the ventilation ratio achieves 14%. The heat required for regenerating desiccant accounts for 55% and higher of the system's total heat consumption; the system is expected to be energy efficient by using wasted heat from the absorption chiller for desiccant regeneration; and its energy efficiency expands as the ratio of ventilation air rises above 15% compared with the conventional absorption cooling system. The energy efficiency also benefits as the ratio rises beyond 70% against the conventional vapor compression cooling system.
Journal
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- Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers
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Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 21 (1), 55-62, 2004
Japan Society of Refrigerating and Air Conditioning Engineers
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Details 詳細情報について
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- CRID
- 1390001204665835904
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- NII Article ID
- 130004566019
- 10012932872
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- NII Book ID
- AA11125910
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- ISSN
- 2185789X
- 13444905
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- NDL BIB ID
- 6915813
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed